126 HEMIPTERA. 



wrinkled transversely. Head chestnut in front with the vertex 

 pitchy. Ocelli red. Thorax with a shallow furrow across about 

 the middle, in front of which is a distinct, transverse, elevated 

 line ; the portion of the thorax behind the furrow is finely 

 wrinkled transversely. Scutellum finely wrinkled transversely, 

 and furnished with a few scattered punctures. Coriaceous por- 

 tion of the elytra chestnut-brown, thickly and finely punctured ; 

 membrane pale brownish yellow, seniitransparent. Body beneath 

 pale chestnut, impunctate; abdomen clothed with short hairs, 

 and with the apex pitchy. Legs pale chestnut, with the poste- 

 rior tibiae darker ; anterior tibiae with the apex black ; tarsi red- 

 dish. Rostrum and antennae reddish testaceous ; the antennae 

 darker. 



a. N. India. From Capt. Boys's Collection. 



Genus 11. AMNESTUS, n. g. 



Head small, with the central lobe longer than the lateral, 

 rounded and 4-spined at the apex ; lateral lobes rounded, with 

 their margins spinous. Eyes moderate, rather prominent ; ocelli 

 large, distant. Antennae of five joints?, basal joint rather short 

 and stout, second very small, not half the length of the first, 

 third very long, three times the length of the first, clavate, 

 clothed with hairs ; fourth and fifth ? joints wanting. Rostrum 

 reaching the intermediate coxae, inserted close to the apex of the 

 head, rather slender; basal joint rather short, second and third 

 about equal, longer than the first, fourth joint a little shorter 

 than the third, thinnest. Rostral canal consisting only of two 

 short rounded plates at the base of the rostrum. Prosternum 

 with a keel on each side, running from the anterior margin to 

 the anterior coxae, forming a broad, shallow central canal. Body 

 oblong. Thorax somewhat quadrate, slightly contracted towards 

 the posterior angles ; with the anterior angles rounded, and the 

 anterior portion of the disc convex. Scutellum rather small, 

 triangular, pointed, with the lateral margins straight. Coriaceous 

 portion of the elytra much larger than the membrane, with the 

 apical margin sinuated ; membrane with three or four indistinct 

 longitudinal nervures. Anterior legs stout ; the thighs beneath 

 near the base with a large spine, which is bifid at the apex; 

 posterior and intermediate legs longer, with the thighs unarmed. 



1. AMNESTUS spinifrons. PI. Ill, fig. 2. 



Cydnus spinifrons, Say, Journ. Acad. Nat. Sci. Phil. iv. 316. 2 

 (1824). 



a. Trenton Falls, New York. Presented by Edward Dou- 

 bleday, Esq. 



